Firearm



C. G. SWEBILIUS.

FIREARM. APPLICATION FILED SEPT-24 1919.

hwflgssn Patented July 11,1922.

Arm/Wax name stares PATENT CARL G. SWEBILIUS, OF NEW HAVEN, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGIQ' MENTS, TO THE MARLIN FIREARMS CORPORATION, OF NEW HAVEN, CONNECTI- OUT, A CORPORATION OF DELAWARE,

FIREARM.

T allwlzom it may concern.- I

Be it known that I, CARL GUs'rAF SWE- nILIUs, a citizen of the United States, resid-v ing at New Haven, in the county of New Haven and State of Connecticut,-have invented a new and useful mprovement in Firearms, of which the following is a specification,

' Thisinvention relates to improvements in firearms and is of especial utility in the automatic typ R In my copending application Ser. No. 239,360, filed June 11, 1918, I have disclosed an automatic firearm 'ada tc for synchronous firing with the propel er of an airplane. Thetrigger mechanisniof this gun is located in a, housing carried by the receiver. This meeting the housing to the receiver.

' It has} been found highly desirable in iitjypes of automatic guns to have the varius elements thereof readily accessible and their proper places.

-It is thev object of this invention to provide means for securing the above-mentioned 'housing or a similar attachment to the receiver'insuch a way-that the housing may rinlydattech'edto the receiver. 'An'jadditional object of the invention is an attaching means which necessitates the tight- 'ening of but one connecting member to secure the housing to the receiver. a 3 Refer 'ng now to the drawings,

' Fig. Fis a side elevation-of the receiver with the housing attached. r Fig. 2 is a section ,online 2-2 of Fig. 1, 'L the trigger mechanism and breech bolt being omitted for the sake of clearness.

The reference numeral 1. designates the.

receiver of a gun to which is attachedthe housing 2, by means of an arrangement of elements to be described. a

In the side walll of the receiver are out two slots 3 andA. hcse slots may be of any desired length 01' width. The outer end of,

each slot is under cut, and this cut-is preferably, although not necessarily, a smooth surface oblique to the wall of the receiver. One end of the housing'is shaped to provide a lug- 5 somewhat shorter than the slot 3 but so shaped to coact with the under cut in the outer end of said clot. At the other Specification of Letters Patent.

application is directed to the means of con-.

etat'the same time securely arranged in be readily removed but at the. same time be' cessfully carry out the principles oi Patented Juigr t i, t

Application filed September 24, 1919. Serial No. 325,836.

end of the housing is an opening 6 tl irough which extends the bolt 7. The head 8 of this bolt is shaped to coact with'the under cut at the outer edge of the slot 4. A nut 9 is provided on the bolt, together with a lock washer 10. I

To attach the housing 2 to the receiver 1, i the housing is so tilted that'the lug 5 may be inserted into the slot 3. With the nut 9 just engaged with the threads of the bolt 7', the latter is tilted'slightly, the opening 6 being of suflicient size to allow it. The head of the bolt will thus clear the end the slot 4 and maybe inserted therein. The nut 9 is now tightened. The surfaces of the slots and of the head 8 and lug 5 are thus brought 7 into contact. When. the nut is tight, the housing is securely held in place on the re celver. I

Vhile my, invention is disclosed in its n as means to attach a housing to an autoni gun, it is by no means limited to such but is adapted for use wherever it is desired to attach one member to another.

It is, of course, understood that the ticular device shown and described in the present application illustrates merely pre ferred form of construction and arrangement of parts, which. it has been found. wili sucvention, and that various changes an n fications of details may easily be made w out departing from the spirit or my in an tion as defined in the appended claims.

What I claim is:

l.'A means of attaching one member to anotherfcomprising two slots in one of the members, one end of each slot being under cut, a lug carried by the second in 1' ul adapted to coact with the nude" slot and a draw bolt carried by member, said bolt having a head to coact with the undercut cud oi ond slot.

2. A means oi attaching a housing the receiver of a gun, comprising two slots in the wall of the receiver, the outer ends of said slots being undercut, and heads carried by said housing adapted to enact with said undercuts. one of said heads being mew said slots, a. rigid housing, opp

ranged oblique surfaces carried by said houshousing carried thereby, and means -for ating, and means for moving one of said obcaching said housing to said receiver, said lique surfaces relative to said housing wlieremeans comprising coacting oblique surfaces 10 by the oblique surfaces of the housing are on said housing and receiver and means mov- 5 brought into holding engagement with the able relative to said housing for forcing said oblique surfaces of said receiver surfaces into en agement.

4. In an automatic guma receiver, a rig JARL G. SVVEBILIUS. 

